But the license and the attribution should be included in the layers and visible (clearly enough). While the relatively new ODbL license of the OSM data allows nowadays to publish maps created with OSM data under traditional restrictive licenses I think that all of the maps you have included here are licensed under a permissive license or at least there's some sort of fair use clause for their use that allow using these. * It would be great and also inline with the licenses / use permissions of the map styles to include appropriate map (tiles) license information (that would include attribution and note of the license under which the different OSM maps are offered for reuse and distribution).
* You might want to move the currently named 'Cycle Map' layer under Thunderforest in your next version as it's also a 'Thunderforest style' (by Andy Allan) and rename it to OpenCycleMap, which Andy uses for it. Thanks also for your latest addition of three more Thunderforest styles (by Andy Allan). This is really a great service that I hope gets more publicity as it helps put OSM at the hands of so many people that use GE. Big thanks for these wonderful packs of map layers that include so many of the numerous OpenStreetMap-based layers.
